Top dressing for raspberries in August and autumn after pruning
Every gardener knows that raspberry bushes grow well and give a rich harvest in chemical-rich soils. To create favorable conditions for this plant, it is important to choose the right fertilizers.
Top dressing of raspberries in the fall helps to increase the yield. As a top dressing, organic and mineral substances are used, introduced according to the established rules.
When do raspberries need feeding and processing?
It's not just a raspberry fertilization calendar that can help determine when to fertilize. The plant itself will tell you what exactly it lacks, and which fertilizers are already superfluous. You don't have to be an experienced gardener to be able to identify the problem.
You need to carefully examine the shrub, paying attention to the change in the color of the leaves., the thickness of the stems. Having discovered the problem in time, the owner will have time to solve it so that the lack / excess of fertilizers does not affect the yield. So, how the bush signals the problem:
- if the plant has weak and thin shoots, the foliage is small, this indicates lack of phosphorus;
- the appearance of yellow leaves with green veins indicates iron deficiency;
- leaves grow poorly, turn yellow starting from the middle - add magnesium to the soil;
- the shrub looks burnt, turned brown - little potassium. In this case, the plant may not survive the winter;
- small, yellowing leaves indicate a lack of nitrogen... At the same time, the plants do not grow or do it too slowly, they look drooping;
- leaf color is very dark, shoots grow quickly - too much nitrogen. This leads to early shedding of berries, a decrease in yield.
Fertilizers for raspberries are needed annually, every season (except for winter) - only under such conditions can you get a rich harvest of large berries. If the soil in the raspberry area is clayey, fertilizers should be applied one and a half times more. If the soil is saturated with sand, top dressing is required more often.
How to fertilize in spring before fruiting?
Before spring feeding, it is important to prepare the bushes. First of all, cut off the lower shoots. Pull the weeds out by hand, gently loosen the top 10 cm layer of soil. This should be done so as not to hurt the roots.
To have reason to expect a rich harvest, mineral fertilization is required in the spring. What fertilizers to apply in the fall under raspberries:
- superphosphate - this fertilizer contains a huge amount of substances useful for plants: sulfur, potassium, magnesium and others. This fertilization leads to an increase in the yield of raspberries, an acceleration of development, an increase in resistance to various diseases;
- potassium salt - a nutritious substance. An excellent substitute for this fertilizer will be custom ash, which, among other benefits, does not contain chlorine, which has a negative effect on raspberries. Recommended to be applied dry or diluted;
- nitrogen fertilizers... Urea and ammonium nitrate.
It is better to fertilize raspberries with minerals in a complex manner. The best effect is obtained when using a mixture of 60 g of superphosphate, 30 g of ammonium sulfur and 40 g of wood ash. Mix all this in a bucket of water. Apply to the soil in two steps, and the second top dressing should be done in the first month of summer.
It should be borne in mind that not every land will benefit from any fertilization. Therefore, it is better to make an analysis of the agrochemical composition of the land before making it. And only on the basis of its results to draw conclusions about the introduction of specific types of fertilizers.
During the period of fruit setting, it is recommended to fill the rows of raspberries with humus with compost. Organic and urea must be added every year, while fertilization with phosphorus and potassium - every three years.
How to feed remontant raspberries in August?
How to feed raspberries in August, especially after fruiting? In summer, at least one fertilization is required during the ripening period of the berries. Many gardeners recommend doing one more additional fertilization of the bushes - in June.
The plant should be saturated with nitrogen, potassium or phosphorus. In addition, the bushes are sprayed with an aqueous solution of magnesium sulfate and boric acid. This should not be done in sunny weather, but it is pointless to sprinkle it even before the rain.
After the July harvest of raspberries, it is recommended to re-fertilize with the same fertilizers.
If desired, you can replace them with infused wood ash. For this, 500 ml of ash is poured onto 10 liters of hot water. Fertilizing with nitrogen during this period is not worth it - this will reduce the frost resistance of the shrub.
Fertilizer for raspberries in September
How to feed remontant raspberries in the fall after pruning? It is very important to fully feed the plant in the fall, since it consumed a considerable amount of nutrients during the period of growth and fruiting. The lack of these elements leads to a slowdown in development and a reduced yield in the next year. Thoroughly rinse and loosen before use.
In autumn, organic matter should be introduced - it contains the necessary trace elements. The shrub easily assimilates such fertilizers, so it will meet the spring healthy and full. More often in the fall, the following fertilizers are used:
- rotted manure... Gives strength to shrubs during their vigorous growth in spring. In cold weather, it will help warm and keep the roots intact. Use 6 kg of manure per square of land;
- rotted compost... It is in no way inferior in efficiency to manure. In addition to saturation with valuable substances, it disinfects the soil. A good solution is the use of foliage, leaves, waste from vegetables;
- peat. Slightly saturates the soil, but its value lies elsewhere - it improves the structure of the soil;
- bird (chicken) droppings. Use an aqueous solution, evenly pouring over the area of the raspberry tree.
It is very important to start processing raspberries in September and correctly calculate the amount of fertilization. The dose depends on the appearance of the plant and the quality of the crop. If the shoots are thick, the height of the shoots is up to two meters, while at least 1.5 kg were collected from the bush, they should be fed in the prescribed mode. If the shoots are thin, grow poorly and the harvest is not enough - it is recommended to increase the amount of applied fertilizer.
Giving raspberries the necessary amount of nutrients in autumn and spring, you can both improve the quality of the bushes and improve yields. It is important to comply with the deadlines and feed strictly on schedule.
Is nitrogen necessary in the fall?
Nitrogen stimulates plant growth in the long term, which interferes with the maturation of the shoots and greatly reduces the frost resistance of the shrub. Therefore, it is believed that even at the end of summer, you should not fertilize raspberries with nitrogen. That's a moot point.
Secondary root growth begins in August. Nitrogen is the main component in this process. Therefore, nitrogen should not be added in the fall. At the end of summer - perhaps, but more often the plant needs the small amount of fertilizer that was applied in the spring in early June.
Most plants are able to use the nitrogen deposited earlier in the foliage for the growth of the root system.
Preparing for winter
Preparation of bushes for winter should begin before the onset of freezing temperatures. Raspberries overwinter in a state pressed to the ground. However, before bending the shrub down, it is necessary to prepare the shoots.
Pruning raspberries involves removing old, dead and thin young branches. As a result, only new thick trunks remain, which are pruned in the upper part by 15-20 cm. A distance of 60 cm remains between the bushes. If shoots have sprouted between them, remove.
Leaves from the shoots are removed carefully so as not to damage the buds. If the leaves are left, they will damp, rot and can burn the buds. After cleansing, the bushes are bent down, securing with wire staples. The bushes are placed as close to the ground as possible so that in winter the raspberry bush is completely covered with snow.
After the snow has fallen, you cannot forget about the bushes - if there is not enough snow, you need to add to the bushes... The resulting crust is knocked down so that the raspberries breathe.
Residents of the northern regions should additionally cover the bushes with straw in the fall.
If everything is done correctly in the fall, the raspberry tree will rise in all its glory in the spring. If some shoots have died, they must be removed so that they do not spread disease.
Fertilizers - pests
Fertilizing raspberries should be done with caution, since top dressing can both accelerate the flowering of the plant and ruin the raspberry tree.
Thus, nitrogen cannot be used in large quantities, as raspberries will grow constantly and not "sleep" in the winter.
Fertilizers with potassium, which contain chlorine, are harmful. In the fall, shrubs under which such fertilizers were applied develop chlorosis.
So, before you start applying fertilizers, it is important to find out which ones will have a positive effect on the plants. At the same time, no matter what the soil turns out to be, it is impossible to leave raspberries without feeding. In order for the plant to develop correctly and give a rich harvest, you will have to find a “middle ground”.
Raspberry care in August: pruning and other treatments to increase yields
Moscow, 02.04.2021, 17:19:30, edited by PRONEDRA.RU, author Elena Danilenko.
Raspberry bushes require careful and quality maintenance, including regular pruning. The formation of raspberry shoots has a positive effect on fertility and facilitates harvesting. If you do not prune raspberries once a season, the fruit yield will decline every year. In addition, the plants will be affected by diseases and pests. Dry shoots, among other things, can be a source of infection.
When raspberries need feeding
The soil on which raspberries grow becomes poorer over time - the roots of the plant simply extract valuable substances from it. If you do not carry out regular feeding, then every year the shrub will bear fruit worse and worse. Correctly performed top dressing, on the contrary, helps to get the maximum yield from each bush.
Top dressing of raspberries in autumn is divided into two stages: for the first time, fertilizers are applied in August, at the end of fruiting, and in the second, shortly before the onset of cold weather. But you need to look not only at the season. It is important to evaluate the actual condition of the raspberry, namely:
- color and size of leaves
- number and strength of branches
- the ratio of the number of fruits and the number of shoots.
Small leaves that turn yellow too quickly and weak twigs may indicate that the bushes are lacking in beneficial compounds. But if the shoots of raspberries are well developed, and there are very few fruits on them, then this indicates an overabundance of valuable substances - for example, nitrogenous ones.
What substances does a plant need in autumn
All shrub fertilizers can be divided into mineral and organic fertilizers. In the fall, raspberries need minerals such as:
- Phosphorus, which helps to strengthen the immune system and the development of the root system. It is brought in in the fall, so that during the winter it has time to process and begin to work actively in the spring.
- Potassium, which stimulates metabolic processes. Additionally, it helps to increase the frost resistance of the root system.
- Magnesium has the same function as potassium.
- Microfertilizers (boron, iron, zinc, copper) are introduced only when signs of their deficiency appear.
Organic fertilizers loosen the soil and fill the root system with the nutrients necessary for the growth and yield of the shrub. Organic dressings include:
- bird droppings
- wood ash
- bone flour
Plain wood ash is an excellent substitute for potash salt
Organic fertilizers are applied only at the root. For greater efficiency, organics and minerals are combined. One type of fertilizer cannot completely replace another.
Top dressing in August
During and after fruiting, raspberries also require mineral fertilizers. In the summer, it is necessary to carry out at least one top dressing, and in the ideal case, two: in mid-June and late August. At this time, the plant is in dire need of saturation with phosphorus, calcium and potassium. It is also advisable to treat the shrubs from the sprayer with a solution of boric acid and magnesium sulfate. It is better to hold such an event in dry, calm weather, when precipitation is not planned.
A good choice for watering is an infusion of wood ash (500 g per 10 liters).
It is not worth fertilizing raspberry bushes with nitrogen in summer, otherwise their cold resistance can be worsened.
In summer, it is better to give preference to:
- Sideratam. Companion plants for remontant raspberries are most often calendula and marigolds. Flowers can even be planted between shrubs. The roots of calendula will saturate the soil with ethers, tannins and phytoncides, and marigolds will improve its structure.
- Compost, because it contains a large amount of valuable minerals and trace elements.
- Boron microfertilizers, which are perfect for fertilizing in the first half of the summer growing season.
Top dressing raspberries in the fall
I use an alternation of organic and mineral fertilizers for raspberries. I don't focus too much on this, since initially raspberries are able to grow on very poor rocky soils. But if you want to get an enviable harvest next year, you still have to feed it.
In autumn, preference is given to potash and phosphorus fertilizers. They strengthen the plant's immunity, create a supply of nutrients for the coming season, and increase the chances of a good wintering.
It is convenient for me to work with monophosphate. It already contains both elements, it is enough to add 35-40 grams for one plant. You can also use superphosphate in conjunction with potassium sulfate at 40 and 20 grams per 1 bush, respectively.
I use organics as mulch, covering the raspberry trench after pruning with a peat pad. I apply the rotted manure every 2-3 years in a thin layer, be sure to dig up the ground. It both warms and gives the necessary top dressing in the spring. You can use compost at the rate of a bucket per square meter.
Fertilizing raspberries when planting in the fall
Some gardeners prefer to plant raspberries not in spring, but in autumn. In this case, the shrub needs both organic and mineral fertilizers.
Raspberry seedlings are planted 15-20 days before the onset of frost
About 10 kg of rotted manure or compost and 20 g of calcium and phosphorus are introduced per 1 square meter. Mineral fertilizers are simply scattered over the surface of the earth, organic matter is added from above, the soil is carefully dug up and a planting hole is made in it for the seedling.